Package org.apache.hadoop.hbase.util

Examples of org.apache.hadoop.hbase.util.CollectionBackedScanner

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    }
    // Use a store scanner to find which rows to flush.
    // Note that we need to retain deletes, hence
    // treat this as a minor compaction.
    InternalScanner scanner = null;
    KeyValueScanner memstoreScanner = new CollectionBackedScanner(set, this.comparator);
    if (getHRegion().getCoprocessorHost() != null) {
      scanner = getHRegion().getCoprocessorHost().preFlushScannerOpen(this, memstoreScanner);
    }
    if (scanner == null) {
      Scan scan = new Scan();
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    scan.setMaxVersions(scanInfo.getMaxVersions());
    // Use a store scanner to find which rows to flush.
    // Note that we need to retain deletes, hence
    // treat this as a minor compaction.
    InternalScanner scanner = new StoreScanner(this, scan, Collections
        .singletonList(new CollectionBackedScanner(set, this.comparator)),
        ScanType.MINOR_COMPACT, this.region.getSmallestReadPoint(),
        HConstants.OLDEST_TIMESTAMP);
    try {
      // TODO:  We can fail in the below block before we complete adding this
      // flush to list of store files.  Add cleanup of anything put on filesystem
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    }
    // Use a store scanner to find which rows to flush.
    // Note that we need to retain deletes, hence
    // treat this as a minor compaction.
    InternalScanner scanner = null;
    KeyValueScanner memstoreScanner = new CollectionBackedScanner(set, this.comparator);
    if (getHRegion().getCoprocessorHost() != null) {
      scanner = getHRegion().getCoprocessorHost().preFlushScannerOpen(this, memstoreScanner);
    }
    if (scanner == null) {
      Scan scan = new Scan();
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    }
    // Use a store scanner to find which rows to flush.
    // Note that we need to retain deletes, hence
    // treat this as a minor compaction.
    InternalScanner scanner = null;
    KeyValueScanner memstoreScanner = new CollectionBackedScanner(set, this.comparator);
    if (getHRegion().getCoprocessorHost() != null) {
      scanner = getHRegion().getCoprocessorHost().preFlushScannerOpen(this, memstoreScanner);
    }
    if (scanner == null) {
      Scan scan = new Scan();
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      encodeSeeker.setCurrentBuffer(encodedData);
      KeyValue firstOnRow = KeyValue.createFirstOnRow(getRowKey(batchId, i));
      encodeSeeker.seekToKeyInBlock(firstOnRow.getBuffer(),
          firstOnRow.getKeyOffset(), firstOnRow.getKeyLength(), false);
      boolean hasMoreOfEncodeScanner = encodeSeeker.next();
      CollectionBackedScanner collectionScanner = new CollectionBackedScanner(
          this.kvset);
      boolean hasMoreOfCollectionScanner = collectionScanner.seek(firstOnRow);
      if (hasMoreOfEncodeScanner != hasMoreOfCollectionScanner) {
        dumpInputKVSet();
        fail("Get error result after seeking " + firstOnRow);
      }
      if (hasMoreOfEncodeScanner) {
        if (KeyValue.COMPARATOR.compare(encodeSeeker.getKeyValue(),
            collectionScanner.peek()) != 0) {
          dumpInputKVSet();
          fail("Expected " + collectionScanner.peek() + " actual "
              + encodeSeeker.getKeyValue() + ", after seeking " + firstOnRow);
        }
      }
    }
  }
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    scan.setMaxVersions(maxVersions);
    // Use a store scanner to find which rows to flush.
    // Note that we need to retain deletes, hence
    // pass true as the StoreScanner's retainDeletesInOutput argument.
    InternalScanner scanner = new StoreScanner(this, scan,
        Collections.singletonList(new CollectionBackedScanner(set,
            this.comparator)), true, this.region.getSmallestReadPoint());
    try {
      // TODO:  We can fail in the below block before we complete adding this
      // flush to list of store files.  Add cleanup of anything put on filesystem
      // if we fail.
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      encodeSeeker.setCurrentBuffer(encodedData);
      KeyValue firstOnRow = KeyValue.createFirstOnRow(getRowKey(batchId, i));
      encodeSeeker.seekToKeyInBlock(firstOnRow.getBuffer(),
          firstOnRow.getKeyOffset(), firstOnRow.getKeyLength(), false);
      boolean hasMoreOfEncodeScanner = encodeSeeker.next();
      CollectionBackedScanner collectionScanner = new CollectionBackedScanner(
          this.kvset);
      boolean hasMoreOfCollectionScanner = collectionScanner.seek(firstOnRow);
      if (hasMoreOfEncodeScanner != hasMoreOfCollectionScanner) {
        dumpInputKVSet();
        fail("Get error result after seeking " + firstOnRow);
      }
      if (hasMoreOfEncodeScanner) {
        if (KeyValue.COMPARATOR.compare(encodeSeeker.getKeyValue(),
            collectionScanner.peek()) != 0) {
          dumpInputKVSet();
          fail("Expected " + collectionScanner.peek() + " actual "
              + encodeSeeker.getKeyValue() + ", after seeking " + firstOnRow);
        }
      }
    }
  }
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    if (snapshot.size() == 0) return result; // don't flush if there are no entries

    // Use a store scanner to find which rows to flush.
    long smallestReadPoint = store.getSmallestReadPoint();
    KeyValueScanner memstoreScanner =
        new CollectionBackedScanner(snapshot, store.getComparator());
    InternalScanner scanner = preCreateCoprocScanner(memstoreScanner);
    if (scanner == null) {
      scanner = createStoreScanner(smallestReadPoint, memstoreScanner);
    }
    scanner = postCreateCoprocScanner(scanner);
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    }
    // Use a store scanner to find which rows to flush.
    // Note that we need to retain deletes, hence
    // treat this as a minor compaction.
    InternalScanner scanner = null;
    KeyValueScanner memstoreScanner = new CollectionBackedScanner(set, this.comparator);
    if (getHRegion().getCoprocessorHost() != null) {
      scanner = getHRegion().getCoprocessorHost().preFlushScannerOpen(this, memstoreScanner);
    }
    if (scanner == null) {
      Scan scan = new Scan();
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    }
    // Use a store scanner to find which rows to flush.
    // Note that we need to retain deletes, hence
    // treat this as a minor compaction.
    InternalScanner scanner = null;
    KeyValueScanner memstoreScanner = new CollectionBackedScanner(set, this.comparator);
    if (this.getCoprocessorHost() != null) {
      scanner = this.getCoprocessorHost().preFlushScannerOpen(this, memstoreScanner);
    }
    if (scanner == null) {
      Scan scan = new Scan();
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Related Classes of org.apache.hadoop.hbase.util.CollectionBackedScanner

  • org.apache.hadoop.hbase.Cell
  • org.apache.hadoop.hbase.io.encoding.TestPrefixTreeEncoding
  • org.apache.hadoop.hbase.KeyValue
  • org.apache.hadoop.hbase.regionserver.DefaultMemStore
  • org.apache.hadoop.hbase.regionserver.DefaultStoreFlusher
  • org.apache.hadoop.hbase.regionserver.HStore
  • org.apache.hadoop.hbase.regionserver.Store
  • org.apache.hadoop.hbase.regionserver.StoreFlusher
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